Update:Due to a loophole with JIRA and Google Cache, people were once again able to access Valve’s project tracker. NeoGAF user ekim managed to snap some pictures of the tracker before it was closed, showing that the Half-Life 3 group have increased in members (to a total of 46), and reveals a new group called Half-Life 3 Core, with only 10 members.

Update 2:The trademark has been removed, and we can safely assume the whole thing was a fake. As fellow writer Dhel says, there is no trademark for either Half-Life 2 nor Left 4 Dead, which further fuels the assumption.
But hey, at least we got some delicious hype out of it, didn’t we?

Ignoring the leak however, we’ve gone long without any news on both Ricochet 2 and Half-Life 3 (the former which I’m personally more excited for). Well, it’s time to quench some of your thirst for news!